Research, guides and ecosystem updates
Original research on UCP adoption, the State of Agentic Commerce report, guides for each store platform, and the latest spec changes, written for developers and platform teams building for agentic commerce.
Personal Agent Protocol (Poppy) v0.1: What the Spec Says and How It Fits With UCP
Meta and Sierra's Personal Agent Protocol now has a spec. Draft 0.1 defines poppy.json discovery, OAuth sign-in with read and write scopes, one session across APIs, web and conversation, and adds 35 design partners including OpenAI, Visa and Mastercard. What it says, and where it sits next to UCP.
· 12 min read
TikTok Buy Direct Runs on UCP: What Brands Need to Know
TikTok's new Buy Direct checkout and Shopping Assistant were announced at Advertising Week, and Buy Direct requires a Universal Commerce Protocol integration. What TikTok announced, how UCP fits in, what Salesforce says about timing, and what brands should check first.
· 7 min read
UCP's Ask Is Merged: Six Review Questions and How the Spec Answered Them
The ask capability merged on 7 October as dev.ucp.common.ask, no longer shopping-only. The six design questions raised in review, and how the merged spec answers each: no side effects, plain-text answers, retries, per-turn authorisation, prompt injection and resource IDs.
· 8 min read
UCP Gets a Product Feed: Inside the Catalog Feed Draft
UCP has been live-only: agents ask a store's catalog and get today's answer. A working-group draft, PR #866, adds bulk catalog feeds for indexing ahead of time, with live search still the final word on price and stock. How it works, and what reviewers are pushing on.
· 10 min read
Video, 3D and Image Variants in UCP: What the New Media Type Adds, and What Stores Send Today
UCP's Media type was one URL and one pair of dimensions. PR #690 adds image encodings, video renditions and streams, external players, 3D formats and posters. What changed, the rules for agents, and what live catalog replies carry today.
· 10 min read
Shop through the store page: WebMCP runs in Playground 0.22.0
Playground 0.22.0 runs an agent through the tools a store page registers (WebMCP), keeps every run as a replay with screenshots, and lists page tools beside UCP tools in the Tool Inspector.
· 5 min read
Two Routes to Checkout: What Shopify's WebMCP Launch Means for Every Store
On 28 September Shopify opened checkout to browser agents and told builders which route to use. The route changes how fast an agent gets there, the model changes what it finds, and only one route can carry payment, identity and attribution with it. Here is what that means for every store.
· 8 min read
Book a room over UCP: a hotel test store in Playground 0.17.0
hotel.local is a test store for the draft UCP lodging booking capability. Book a room by hand in the Tool Inspector, or let any model book one end to end in Agent runs.
· 5 min read
UCP Lodging Is Merged: What Changed on the Way to the Spec
The Lodging Technical Council's booking capability is now in the UCP spec as a draft, the first from a vertical other than shopping. What merged, five things that changed in review, and what it still leaves for later.
· 10 min read
Agent Identity in UCP: Web Bot Auth Interop Heads to 2026-04-08
Amazon blocked an agent this week for not identifying itself. UCP already lets agents sign in a way web bot verifiers accept, and an open PR would bring that to the version a third of stores declare. What the spec says, what the backport changes, and who it reaches.
· 7 min read
UCP's Ask Capability Explained: Natural-Language Q&A for Shopping Agents
Buyers ask questions no schema predicts. UCP's proposed ask capability gives them a home: a free-form question in, a sourced answer out, and no side effects. What the draft does, where it fits, and what the Tech Council is still deciding.
· 9 min read
Salesforce Named a Date for UCP: What Its Storefronts Declare Today
In January Salesforce announced UCP support with no timeline. At Dreamforce it gave one: generally available in October. Here is what Commerce Cloud storefronts declare before it ships — and the two details in that baseline worth recording now.
· 6 min read